LOUIS W GRAMA
Pharmacy in Trenton, NJ

4791265, Dec 13, 1988

Jul 29, 1986

6/890297

Alfred R. Senni - Burlington NJ
Louis F. Grama - Robbinsville NJ

Fifth Dimension Inc. - Trenton NJ

B23K 1100

219 912

An electric resistance welder comprises a frame and a movable arm mounted to the frame for gravitational movement relative thereto. A movable electrode is carried at an end of the movable arm. A stationary electrode is spaced opposite the movable electrode to accommodate a plurality of workpieces therebetween, with the movable electrode resting against the workpieces and gravitationally biased toward the stationary electrode. An electric pulse is conducted through the electrodes and workpieces for heating and softening the workpieces to enable the arm to accelerate toward the stationary electrode at the acceleration of gravity, whereby the movable electrode collapses the workpieces toward one another. A stop is arranged to be engaged by the arm for terminating travel of the arm when the movable electrode has traveled a predetermined distance toward the stationary electrode, and subsequent to termination of the electric pulse. Such a technique is highly suited toward the welding of a ball to a wire, the ball and wire having diameters no greater than 0. 04 inches.